Import Geant4 5.0.0 source tree

2016-06-08 16:57:27 +02:00
parent 330b82b769
commit 37fff30d2e
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+//
+// ********************************************************************
+// * DISCLAIMER                                                       *
+// *                                                                  *
+// * The following disclaimer summarizes all the specific disclaimers *
+// * of contributors to this software. The specific disclaimers,which *
+// * govern, are listed with their locations in:                      *
+// *   http://cern.ch/geant4/license                                  *
+// *                                                                  *
+// * Neither the authors of this software system, nor their employing *
+// * institutes,nor the agencies providing financial support for this *
+// * work  make  any representation or  warranty, express or implied, *
+// * regarding  this  software system or assume any liability for its *
+// * use.                                                             *
+// *                                                                  *
+// * This  code  implementation is the  intellectual property  of the *
+// * GEANT4 collaboration.                                            *
+// * By copying,  distributing  or modifying the Program (or any work *
+// * based  on  the Program)  you indicate  your  acceptance of  this *
+// * statement, and all its terms.                                    *
+// ********************************************************************
+//
+//
+// $Id: G4WeightCutOffProcess.cc,v 1.4 2002/11/04 10:47:56 dressel Exp $
+// GEANT4 tag $Name: geant4-05-00 $
+//
+// ----------------------------------------------------------------------
+// GEANT 4 class source file
+//
+// G4WeightCutOffProcess.cc
+//
+// ----------------------------------------------------------------------
+
+#include "G4WeightCutOffProcess.hh"
+#include "G4VScorer.hh"
+#include "G4GeometryCellStep.hh"
+#include "G4ParallelGCellFinder.hh"
+#include "G4MassGCellFinder.hh"
+#include "G4TouchableHandle.hh"
+#include "G4VIStore.hh"
+
+G4WeightCutOffProcess::
+G4WeightCutOffProcess(G4double wsurvival,
+		      G4double wlimit,
+		      G4double isource,
+		      G4VIStore *istore,
+		      const G4VGCellFinder &aGCellFinder,
+		      const G4String &aName)
+  : 
+  G4VProcess(aName), 
+  fParticleChange(new G4ParticleChange),
+  fWeightSurvival(wsurvival),
+  fWeightLimit(wlimit),
+  fSourceImportance(isource),
+  fIStore(istore),
+  fGCellFinder(aGCellFinder)
+{
+  if (!fParticleChange) {
+    G4Exception("ERROR:G4WeightCutOffProcess::G4WeightCutOffProcess: new failed to create G4ParticleChange!");
+  }
+  G4VProcess::pParticleChange = fParticleChange;
+}
+
+G4WeightCutOffProcess::~G4WeightCutOffProcess()
+{
+  delete fParticleChange;
+}
+
+G4double G4WeightCutOffProcess::
+PostStepGetPhysicalInteractionLength(const G4Track& aTrack,
+				     G4double   previousStepSize,
+				     G4ForceCondition* condition)
+{
+  *condition = Forced;
+  return kInfinity;
+}
+  
+G4VParticleChange * 
+G4WeightCutOffProcess::PostStepDoIt(const G4Track& aTrack, 
+				    const G4Step &aStep)
+{
+  fParticleChange->Initialize(aTrack);
+  G4GeometryCell postCell = fGCellFinder.GetPostGeometryCell(aStep);
+  G4double R = fSourceImportance;
+  if (fIStore) {
+    G4double i = fIStore->GetImportance(postCell);
+    if (i>0) {
+      R/=i;
+    }
+  }
+  G4double w = aTrack.GetWeight();
+  if (w<R*fWeightLimit) {
+    G4double ws = fWeightSurvival*R;
+    G4double p = w/(ws);
+    if (G4UniformRand()<p) {
+      fParticleChange->SetStatusChange(fStopAndKill);
+    }
+    else {
+      fParticleChange->SetWeightChange(ws);
+    }                  
+  }
+  return fParticleChange;
+}
+
+const G4String &G4WeightCutOffProcess::GetName() const {
+  return theProcessName;
+}
+
+
+G4double G4WeightCutOffProcess::
+AlongStepGetPhysicalInteractionLength(const G4Track&,
+				      G4double  ,
+				      G4double  ,
+				      G4double& ,
+				      G4GPILSelection*) {
+  return -1.0;
+}
+
+  
+G4double G4WeightCutOffProcess::
+AtRestGetPhysicalInteractionLength(const G4Track& ,
+				   G4ForceCondition*) {
+  return -1.0;
+}
+  
+G4VParticleChange* G4WeightCutOffProcess::
+AtRestDoIt(const G4Track&, const G4Step&) {
+  return 0;
+}
+
+G4VParticleChange* G4WeightCutOffProcess::
+AlongStepDoIt(const G4Track&, const G4Step&) {
+  return 0;
+}